-yne
(-aɪn)
orig. var. -ine5, now used in its own right to denote a triple bond between carbon atoms, as in butyne, propyne.
| 1931 Jrnl. Chem. Soc. 1610 Definitive Report of the Committee [of the International Union of Chemistry] for the Reform of Nomenclature in Organic Chemistry... The name of hydrocarbons containing the triple linkage will end in yne, diyne, etc. |